This is just what I was looking for. I have a Honda Van and every time the temperature drops the tire pressure gauge warning light comes on. After purchasing one d/c unit the cord was not long enough to reach the tires, the second d/c unit got stuck in the cigarette lighter in the car, broken into pieces and took and hour to remove the spring loaded clasp. Gas station air..rarely do they work. Finally an a/c unit that is reasonable!
Amazon.com: Black & Decker ASI300 Air Station Inflator: Home Improvement
Black and Decker air staition, $39.99 w/FSSS. Save %57! Both a/c and d/c power. 
